Read: Need to Buy B-Tac Ar-15 5.56 Barrels Brownells ? 

The Brownells B-Tac line of barrels are manufactured from 4150V Steel, and feature a Nitride finish for superior harness, lubricity, and ease of cleaning.  They feature a 1:7 twist for rifle and 1:9 for pistol length.  The barrel O.D. at the gas block is 0.750"

Cold Hammer Forged For Superb Accuracy; Chrome-Lined For Long Life

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential—like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile and length. 5.56x45 barrels come in 10.5”, 14.5” and 16” lengths, with the shorter barrels featuring carbine length gas system. Barrels are available in lightweight or government contours, and M4 for the 14.5” length. OD at gas block is .750”.

These barrels are not dimpled or marked for the gas block.

The Faxon GUNNER line of AR barrels are well known in the AR world for their unique profile.

The GUNNER profile uses the Government profile dimension from extension to the .625” gas block, then is a pencil profile from the gas block forward to the front.

Removing the weight from the front of the barrel ensures maximum versatility and keeps material to the rear to maximize heat resistance and mitigate whip.

Manufactured 100% in-house from cradle-to-grave, these Faxon barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy.

• Barrel Material: 4150 CMV Steel
• Barrel Type: Button Rifled
• Barrel Caliber: 5.56
• Barrel Twist: 1:8

Each Faxon GUNNER barrel goes through a battery of tests at each manufacturing operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.